Domoic acid is a naturally occurring marine neurotoxin made from certain algae. When it rains, runoff from land, specifically urban and agricultural runoff, can increase nutrient input which causes this type of algae to rapidly grow. These neurotoxins can cause lethargy, foaming at the mouth, seizures, brain damage and death in animals like sea lions and dolphins when contaminated fish are consumed. This type of bacteria is also harmful to humans and can be contracted through ingestion of infected fish and shellfish. Infected shellfish, specifically, can cause Amnesic Shellfish Poisoning (ASP). Coming into contact with infected water may also cause skin irritation so proceed with caution when thinking about heading into the water!

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